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if not modules then modules = { } end modules ['libs-imp-imagemagick'] = {
version = 1.001,
comment = "companion to luat-lib.mkxl",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
-- \registerctxluafile{libs-imp-imagemagick}{autosuffix}
-- \starttext
-- \startluacode
-- utilities.imagemagick.convert {
-- inputname = "hacker.jpg",
-- outputname = "m_k_v_i_hacker.png",
-- options = { "-rotate", 90, "-noise", 2 },
-- }
-- context.externalfigure { "hacker.png" }
-- \stopluacode
-- \stoptext
local libname = "imagemagick"
local libfile = { "CORE_RL_MagickCore_", "CORE_RL_MagickWand_" }
local imlib = resolvers.libraries.validoptional(libname)
if not imlib then return end
local function okay()
if resolvers.libraries.optionalloaded(libname,libfile) then
okay = function() return true end
else
okay = function() return false end
end
return okay()
end
local imagemagick = utilities.imagemagick or { }
utilities.imagemagick = imagemagick
local im_execute = imlib.execute
local nofruns = 0
local report = logs.reporter(libname)
function imagemagick.convert(specification)
if okay() then
--
nofruns = nofruns + 1
statistics.starttiming(imagemagick)
--
local inputname = specification.inputname
if not inputname or inputname == "" then
report("invalid run %s, no inputname specified",nofruns)
statistics.stoptiming(imagemagick)
return false
end
local outputname = specification.outputname
if not outputname or outputname == "" then
outputname = file.replacesuffix(inputname,"pdf")
end
--
if not lfs.isfile(inputname) then
report("invalid run %s, input file %a is not found",nofruns,inputname)
statistics.stoptiming(imagemagick)
return false
end
--
report("run %s, input file %a, outputfile %a",nofruns,inputname,outputname)
--
specification.inputfile = inputname
specification.outputfile = outputname
--
local okay, detail = im_execute(specification)
if not okay then
report("error %a (make sure options start with one -) ",detail)
end
--
statistics.stoptiming(imagemagick)
end
end
function imagemagick.statistics(feedback)
local runtime = statistics.elapsedtime(imagemagick)
if feedback then
report("nofruns %s, runtime %s",nofruns,runtime)
else
return {
runtime = runtime,
nofruns = nofruns,
}
end
end
-- imagemagick.convert { inputname = "t:/sources/hacker.jpg", outputname = "e:/tmp/hacker.png" }
-- imagemagick.statistics(true)
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